

EFFECTS OF DISPERSED GAS PHASE ON THE TURBULENT STRUCTURE OF TWOPHASE FREE AND CONFINED JET FLOWS
Alekseenko S.V., Dulin V.M., Markovich D.M., Pervunin K.S.
Institute of Thermophysics SB RAS, Novosibirsk, Russia
Citation:
Alekseenko, S.V., Dulin, V.M., Markovich, D.M. and Pervunin, K.S., (2010) Effects of dispersed gas phase on the turbulent structure of twophase free and confined jet flows, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(4), PP. 140  146.

Keywords: turbulence; bubbly jet flows; local gas fraction; mixed correlations 
Abstracts:
The present work is devoted to the experimental study of bubbly free and impinging turbulent jets (Re = 12,000)by using optical measurement techniques, such as planar fluorescence for bubble imaging (PFBI) method (detailed description is given in [1]) combined with PIV and PTV approaches for velocity measurements of thephases. Therefore, this allowed instantaneous spatial distributions of the gas and liquid velocities and local gas fraction to be measured simultaneously. For every flow conditions, the mean values of velocity of the bothphases and the local gas fraction were calculated as well as a full set of statistical moments of the gas and liquid velocity and the local gas fraction fluctuations, including mixed onepoint correlations. The paper reports theeffects of volume gas fraction on turbulent structure of the jet flows studied. 
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